PREFACE. 



IN 1815, I translated the third edition of Professor Blu- 

 menbach's " Institutions Physiologic^," anonymously, with 

 the addition of twenty pages of notes ; the whole amounting to 

 two hundred and sixty pages. 



In 1817, I published a second edition, with my name, and 

 the addition of a hundred and fifty pages of notes ; the 

 whole amounting to four hundred and twenty-six pages. 



In 1820, I published a third edition, with two hundred 

 pages of notes, in smaller type than the text; so that, 

 although the whole amounted to four hundred and sixty-five 

 pages, the matter of my notes very nearly equalled that of 

 the text. 



In 1824, I published a fourth edition, from a new edition 

 which had appeared of the original work in 1821. The 

 notes, still in smaller type, filled three hundred and fifty pages, 

 and the whole amounted to five hundred and eighty-one ; so 

 that the matter of my notes greatly exceeded that of the text. 



Finding that, in the present edition (which, through my 

 engagements, has been delayed long after the preceding was 

 out of print), my own matter would very much exceed that 



